This is a type of diagram that represents an S88 Recipe procedure

Symbols are explained in the S88Reference.cnd model.

PFC editing functions  are similar to the SFC functions

If you select and right click on a phase then Choose 'insert below', a new phase is inserted in the chart

For the PFC menu to appear the class of the object should have Test Table Type set as Step/Trans in the class design for the objects class.